Lubricating-pump.



Patented Dec. 19, 1916.

rif

FFME.

LUBRICAIING-PUMP.

T 0 all whom it may concern.'

Be it known that I, Eviannr'r W. HARMON, a citizen of the United tates,residing at Shoffner, in the county of Jackson, State of Arkansas, haveinvented certain new and useful Improvements in Lubricating- Pumps; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same. V

This invention relates to improvements in pumps, and particularly to oilpumps.

One object of the invention is to provide an improved operatingmechanism for a pump used in connection with lubricating systems onengines.

Another obj ect is to provide a construction whereby the stroke of thepump will be constant so as to feed the oil to the proper parts of theengine without flooding.

Other objects and advantages will be apparent from the followingdescription when taken in connection with the accompanying drawing.

In the drawing: Figure 1 is an elevation of my lubricating pump shown inconnection with a portion of an engine; Fig. 2 is an enlarged verticalsection on the line 2-2 of Fig. l; Fig. 3 is a vertical section on theline 3 3 of Fig. 2; Fig. 4 is a vertical section on the line 4-4 of Fig.2.

Referring particularly to the accompanying drawing, 10 represents aportion of the cylinder of an engine, and 11 the crank shaft thereof.Mounted on the cylinder is a receptacle 12, which is adapted to containthe lubricating oil. Disposed transversely through the lower portion ofthe receptacle is a shaft 13, one end being rotatably mounted in a capnut 14, and the other passing through the packing gland 15. Thislastnamed end of the shaft is provided with an angularly extending arm16 which is connected to an eccentric 17 on the crank shaft, by means ofal connecting rod 18. Adjacent the shaft 13, within the receptacle, andhaving its opposite. ends mounted in bearings 19 is a second shaft 20,the said bearings being similar in construction to the bearings 14.Loosely mounted on the shaft 13 are two pinions 21 and 22, the former ofwhich is a ratchet pinion having the teeth on its side face as clearlyshown at 23. Formed integrally on the opposite face of f Specificationof Letters Patent. Patented Dec', 19, 1916 Appli-cation -filed April '7,1916. i

Serial N0. 89,628.

the pinion 21-is a smaller pinion 24, which *4 meshes with a pinion 25loosely mounted on the shaft 20. Thisl pinion 25 has a smaller integralpinion 26 which meshes with the before-mentioned pinion 22. This pinion22 is f similarly formed with a smaller pinion portion 27 meshing with apinion 28 which is keyed on the shaft 20. Adjacent the pinion 21, andrigidly secured on the shaft 13 is a sleeve 29 which is formed with anenlargement 30 on one side, and formed longitudinally in thisenlargement is a bore 31, within which is seated a coil spring 32.Slidably disposed in this bore, and normally urged outwardly by thisspring is a plunger pawl 33, the outer end or nose of which engages withthe ratchet teeth of the pinion 21.

On the shaft 20 are the oppositely extending eccentric blocks 34, overwhich are engaged the yoke straps 35. Connected to one side of each ofthese yoke straps is a piston rod 36, each extending into a cylinder 37mounted in the receptacle, and connected to a plunger head 38. Each ofthese cylinders is formed with an inlet opening 39 which draws oil fromthe receptacle thereinto. A discharge pipe 40 is connected to the outerVend of each of the cylinders, and in each of these pipes is a checkvalve 41. These pipes 'are connected to a stand pipe 42 which conveysthe oil to the different moving parts of the engine.

It will thus be seen that by means of the `'eccentric 17 and connectingrod 18, rocking motion will be imparted to the shaft 13 causing the pawl33 to engage with the teeth 23 fand move the pinion 21 in one direction,but to slide idly over the teeth when the shaft is jrockcd in theopposite direction. This communicates intermittent rotary motion to thepinion 21 which transmits this rotary motion to the pinions 24, 25, 26,22 and 27 to the pinion 28 which rotate-s the shaft 20. This fmoves theeccentric blocks 34 and through their engagement with the yoke strap 35reciprocates the plungers or pistons 38. This oil in the receptacle issucked into the cylinders 37 and'then driven out by the plungers 'orpistons, in a slow and constant manner. 'Each of the plungers or pistonsis equipped with two packing rings 38.

Mounted on the bottom of the receptacle is a casing 43 in which isdisposed a springpressed pawl 43', said pawl engaging with 'the sideteeth of the pinion 21 to hold said pinion against retrograde movementwhen the member 30 moves backwvardly in gaining a new grip on the teeth.

The arm 16 is formed with a plurality of openings 16 by means of WhichtheV link 18 can be adjusted thereon. Thus the stroke of the arm can beregulated, and as a consequence the strokes of the pistons 38.

lVliat is claimed is:

1. A lubricant pumping device comprising a lubricant container, pumps inthe container for forcing lubricant from the container, a rotary shaftfor driving the pumps, an oscillatable shaft, driving connectionsbetween the shafts comprising a ratchet element, -a paWl carried by theoscillatable shaft Vand enf gaging the ratchet element, and a levercarried by the oscillatable shaft for moving the said shaft. Y

2. A lubricant pumping device comprising a lubricant container, pumps inthe container for forcing lubricant from the container, ,parallel shaftsin the container, intermeshi'ng loosely mounted gears on the shafts,means on one of the shafts for actuating the pumps, a rigidly mountedgearV on the pump shaft, one of the loose gears being formed withratchet teeth, an oscillatable member mounted on theY other shaft, aspring-pressed pawl for the ratchet teeth carried by the oscillatablemember, and means for moving the oscillatablevmember.

In testimony whereof, I affix my signature, in the presence of tvvoWitnesses.

Y EVERETT 1X7. HARMON.

Witnesses: A y

DAN BROOKE, A.F. CORLEY.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner nf Yatents.

1 Washington, D. GJ

